Hello Jepira,
I checked my G73 and noticed that by default the "Allow this device to wake the computer" setting is not "enabled" - I don't see you mention that you changed this setting - In Device Manager open up the properties for the Atheros AR8131 PCI-E. Click on Power Management (tab) and there is the check box "Allow this device to wake the computer". I am looking deeper into this, but that's the current setting I see right now that you don't mention you've touched. I assume that you've probably already seen this setting but just in case....
Edit: I did some checking and there are NEWER Drivers available - I did a google search for "Atheros 1.0.0.32 WHQL" and came up with a few download sites that offer this driver - I work for a different notebook manufacturer which is how I found out there were newer drivers available. The one that I saw mentioned in the google search was offered through MSI. I am not sure that these drivers will fix the WOL issue but it might be worth the try - Make sure that the driver you use is WHQL (Windows Hardware Quality Labs) certified - Win7 should install it without issue - If you do download it from a download site make sure you check it for virus/spyware/malware prior to extracting the files.
Hope this helps,
In Christ,
Trav...
Peace and Agape In All Things -
Christ -
G73JH 1TB HD Space + 8GB RAM
Zune HD